Home / 28,255.32-38,989.44-16,319.16

Finding the Fourth Proportional to 28,255.32, 38,989.44 and 16,319.16

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Solution

The fourth proportional to 28,255.32, 38,989.44 and 16,319.16 is: 22,518.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,255.32 : 38,989.44 = 16,319.16 : x
  2. Step 2: Convert to fraction form
    28,255.32/38,989.44 = 16,319.16/x
  3. Step 3: Cross multiply
    28,255.32x = 38,989.44 × 16,319.16
  4. Step 4: Simplify right side
    28,255.32x = 636,274,909.67
  5. Step 5: Solve for x
    x = 636,274,909.67/28,255.32
  6. Step 6: Final answer
    x = 22,518.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.